CMH Pub 11-10 Manhattan: The Army And The Atomic Bomb
by Vincent C. Jones. First published, 1985.
GPO Number: 008-029-00132-2
"The role of the War Department, Manhattan District, and other Army agencies and individuals from 1939 through World War II in developing and employing the atomic bomb."
Digitized by the U.S. Army Center of Military History: http://www.history.army.mil